docs: def singularity_build(script=None, src=None, dest=None, **kwargs):
      '''docker build command. By default a script is sent to the docker build command but
      you can also specify different parameters defined inu//docker-py.readthedocs.org/en/stable/api/#build
      '''
      singularity = SoS_SingularityClient()
      singularity.build(script, src, dest, **kwargs)
      return 0